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Where does the problem lie with SVA and bobtails?
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Xpajun
Mud Obsessed


Joined: 22 Sep 2008
Odometer: 3245



1988 Mitsubishi Shogun

PostPosted: Wed Dec 25, 2013 11:47 pm    Post subject: Reply with quote

w3526602 wrote:
Hi,

Sorry! My PC indicated that my reply had not been sent.

602



And yo expect us to believe that????


More like too much of the merry stuff since early this christmas morning Laughing Laughing Laughing
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baxter
Articulating


Joined: 08 May 2006
Odometer: 647
Location: Dunedin, New Zealand


1990 Lada Niva

PostPosted: Thu Jan 02, 2014 10:25 am    Post subject: Reply with quote

I'm a Kiwi so I know nothing about your rules, but I'd suspect the issue with bobtails on road-going vehicles is that there's no longer a rear crumple zone where there once was.
__________________________________
1990 Niva 1600, 2" lift, LSD
www.ladaniva.co.uk/baxter -Baxter's Temple of Niva Site
If you do not have anything to occupy yourself - buy a Niva.
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jon.g1
Articulating


Joined: 07 Nov 2007
Odometer: 753
Location: Taunton, Somerset, UK



PostPosted: Thu Jan 02, 2014 8:31 pm    Post subject: Reply with quote

LOL, old Land rovers don't have crumple zones, they have a "this is going to hurt if you rear end me zones" Laughing
__________________________________
If you make it idiot proof...
They will make a better idiot!

Project Zulander
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FatboyVit
Gate Opener


Joined: 16 Jan 2014
Odometer: 1




PostPosted: Thu Jan 16, 2014 9:26 pm    Post subject: Reply with quote

THE DEFINITIVE ANSWER

Questions and answers to and from VOSA by Ace

Q) What is classed as chassis? Is it purely the outer longitudinal rails or are the crossmembers between these also a part of the chassis?

A) Chassis should be taken to include crossmembers.

Q) We know that cutting or shortening a chassis is classed as modification but is this relative to the vehicle wheelbase i.e. the chassis must remain uncut between the 2 axles but anything forward of front or aft of rear suspension mounts can be removed?

A) Chassis includes the full original length of the longitudinal members including to the front of the front axle and to the rear of the rear axle.

Q) Is it acceptable to remove bodymounts, which contribute no strength to the chassis when changing a body to a different style /make?

A) Yes, providing they are additional to and are not an integral part of the chassis structure.

Q) Is it acceptable to strengthen a chassis by the addition of boxing plates a process that involves turning a 3-sided open chassis rail into a fully enclosed ‘box’ chassis?

A) Yes, providing the original structure remains unchanged.

Q) As chassis strengthening is allowed, are we correct in assuming that additional crossmembers would also be allowed?

A) It is important that the original chassis structure is retained unmodified, and while it is acceptable to strengthen areas and include additional brackets or crossmembers, It would be limited to additions within the existing chassis frame structure. Additional chassis structures, i.e. extending the outward parameters of the original chassis structure would be considered a modification.


TO SUMMARISE:

It is acceptable to box original chassis and also to add additional crossmembers but not to alter the existing chassis in any way to allow for their installation.

It is acceptable to remove NON STRUCTURAL body mounts and engine / gearbox mounts.

It is NOT acceptable to shorten, or lengthen the chassis, either in between standard suspension points or fore and aft of these.

Any additional items welded creating a longer overall chassis are classed as modifications. It would however be acceptable to bolt a reasonably sized additional subframe to existing mounting holes.

Any outriggers (as opposed to continuous chassis frame) fore or aft from the chassis would need clarification from VOSA as to their purpose before removal or alteration was accepted. This would be based on their purpose and whether they formed part of the vehicles original Type Approval.
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LiftedDisco
Gate Opener


Joined: 23 May 2009
Odometer: 13




PostPosted: Sun Apr 20, 2014 6:42 pm    Post subject: Reply with quote

I have had a similar e-mail discussion with VOSA over a potential Tornado build which involves 18" being removed from the rear of the chassis.

First comment is that VOSA have been incredibly helpful...

The other is that they believe the Land Rover community to be largely ignoring their requirements and were clear that any chassis mods would involve IVA.

You can download the manual but it's 299 pages.

Bobtail would require IVA but I would suggest a serious read of the manual and be ready to weep as there are numerous constraints on projections etc both within and outside the vehicle.

Good luck!
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